Jacketed explosive-engine cylinder.



No. 67l,275. Patented Apr. 2, IBM.

A. FISCHER &. A. T. OTTO. JACKETED EXPLOSlV-E ENGINE CYLINDER.

1 (Application' filed Feb. 19, 1900.)

(No Model.)

mlmllllll ll/l/ QMm/l/um i.

N H H II N m Q l o l '3 I J '1 S SW Q 0 U N O0 i I] l 1 H w I A OD S x M a l w Q3 D I N I SE I Q Q WITNESSES: m T 1 INVENTORS l l S Y M m: nuns mans Ln, moroumq, wxsammbu, D c.

UNITED STATES PATENT QEEIoE.

ALEXANDER FISCHER AND ALBERT T. orro, on NEW YoEK, N.. Y.

JACKETED EXPLOSIVE-ENGINE CYLINDER.

SPECIFICATION forming part of Letters IEatent N 0. 671,275, dated April 2, 1901.

Application filed Februaryli), 1900. serial No. 5,759. No inode'in To Cl/ZZ whom it may concern: i A

, of gas and oil engines, so as to keep the same cool and atthe same time preserve tight joints between all theparts.

The preferred form of apparatus embodying our invention .isillustrated in the accompanying sheet of drawings, in which- Figure l is a longitudinal section of suchan engine-cylinder with our invention applied, and Fig; 2 is a cross-sectionon line S S of Fig. 1.

Throughout thedrawings like referencefigurcsrefer to like parts. i

The engine-cylinder 1, being designed for gas or oil engines, is a single-acting cylinder and istherefore left open at the left-hand end. It is to be attached to the other parts of the engine by bolts 2 2 or other convenient means. On the exterior of the cylinder and preferably intermediate of the ends thereof is. the

external flange 3, so located as to come approximately opposite the extreme outer end of the stroke of the piston. The other end of the cylinder has a screw-thread 4 cut on it, preferably exteriorly of the cylinder, though other means of interlocking the end of-the engine-cylinderand jacketing-cylinder might be substituted. The jacketing-cylinder 5, which may be made of any suitable metal, has an annular head 6, which is interiorly threaded to mesh with thread 4: on the end of the engine-cylinder. The jacketing-cylinder 5 is made of such a length and diameter as to have its other end abut against the flange 3 when screwed onto the cylinder far enough so that the annular head comes flush with the right-hand end of the said engine-cylinder. The flange 3 may have a circular recess cut in it, as shown at 3, or be otherwise so shaped as to form a water-tight joint with the abutting end of the jacketing-cylinder 5. Any

convenient number of inlet and outlet ports 7 and 8 may be provided through which wafor or other cooling liquid maybe supplied to the annular jacketing-space 9 left between the cylinder 1 and said jacketing-cylinder, the fluid entering at one point, as at 7, and passing out through another, as at 8.

The cylinder-head 10 preferably contains valve-chambers and passage-ways and such other connections as are necessary and is preferably fastened to the cylinder end by being rigidly attached to the annular head 6 of the jacketingcylinder. This attachment maybe madein any one of a number of ways, but preferably by means of the screw bolts 11 11, which pass through openings inthe cylinder-head and screw inlo threaded recesses @(not shown in the drawings) tapped into the annular head 6. There is of course an inlet connection, as at l2,and an exhaust connection, asat 13, for the cylinder-head. A jacketing-space 14; is also formed in the cylinder head, and cooling fluid may be circulated thronghthe same by means of the connections 15 .and 16. A p l The method of operating our invention is as follows: The parts being properly designed and finished, the jacketingcylinder 5 is screwed onto the engine-cylinder or otherwise caused to interlock therewith and forced down against the external flange 3, so as to form a tight joint. The cylinder-head 10 is then placed in position and held there by screwing in the bolts ll 11. Proper connections being made, the current of cooling liquid can be kept circulating through the jacketing-space 9 during the operation of the engine and all destructive heating of the cylinder thereby prevented.

When the jacketing-cylinder is made of some metal, sueh'as brass,'having a higher coefficient of expansion under heat than the material, such as iron, of which the enginecylinder is com posed, the said jacketing-cylinder will tend to expand more rapidly for approximately equal degrees of heat than does the engine-cylinder, and consequently the butt-joint between said, jacketing-cylinder and the flange 3 will always remain tight when the engine is in operation. All the force of expansion being confined between the flange 3 or other projection at one point and the screw-thread 4 or other projection at another end ofthe jacketingcyli-nderabutting other point of the same cylinder 1, there -is no tendency to open any seams or tear apart any of operation described is preserved. Other our'inventio'n.

forms of cylinder-head might be suhstitutedf and .difierent'me'ans of fastening said cylinderhead to the other parts of the appa rat us might f be employed. Such modiflcat-ions however, i :we should still consider within the scope of 7 Having therefore described ourinvention, what We claim as new,-anddesi-re to protect by Letters Patent, is j l. The combinationof thecyli-nder havi'ngf an'eXterna-l flange and a screw-threaded end, I

' gforrned provided-With "inlet and outlet ;con-

nections, and an internally-screwt-hread ed' annnlarhead at one end adapted to mesh with the thread on the end of the cylinder, the

against the flrstamentioned external flange. The combination of theleylin'derghaving an'external flange and a screw-threadeden'd, l 40 with ajacketi'ng-cylinder provided with inlet-and ontleticonnections, andian internallyscrew-threaded annular head "atone end adapted to mesh with the thread on theend of thecylin'der, theother end of the jacketing-cylinder abutting against the first-mentionedexternal flange, together with the'cylinder-head and means for fastening said icyl-' inder-head to the annular head of the jacketing-cylinder,

3. The combination of the cylinder having an external flange intermediate of its ends and a screw-threaded end, with'a jacketing- ;,cylinder provided with inlet and outlet con-,

nection's, and n internally-screw-threaded .annular head at one end. adapted to mesh with the thread on the end of the cylinder, the

other end of. the jac'ketingcylihderahntting againstthefirst-mentioned external flange,

together with'the cylinder-head and means forfastening said cylinder-head to the annu- 'lar"head of the jacketing-cylinder, said means consisting of screw-bolts passing through the 4. The combination-of thecylinde-r having *an external flange and a screw-threaded end,

cylinder-head andinto the jacket-head.

fiadaptedt'oumesh w'ith'the thread on theend ofthecylinder, "the other end'of the jacketf ing cylinder abutting against the first-ment stioned eexternalflange; together with-the cyli inderfhead an d -means for fastenin gsaid cylinder-head to the annnlar head of' the jacket- I .ing-cy linder, 'saidfcylinder-head beingcast 'with'a jacketing-cylinder formedpf amate-fi,

trial" havinga higher coefficient :of expansion} than that of which the-main cylinderisj witlhuvalve passage-ways and j acket'ing-cavities therein.

I 5; The 'comhi nat-ion ofi pan engine cylind-er and a surrounding. j-acketi'ng-cylimder composed-ofv :ametal having a higher coefficient of expansion i th an the engine cylinderysaid jacket'ing cylin'der interlocking at either end with projections on the engine-cylinder, said "projections beingformed iln te'graldy -with the engine-cy1inder.

" Signed by ine-atJersey-City, Jersey, thisl tthlday of February, 1900. "f

' ALEXANDER FISCHER. Signed by meat. NewYork city,New York, this 14th day of'Fehrnary, 1900; j

' I ALBERT 'T. OTTO; Witnesses: U v m GEO. 'B. ADA-Ms, W. H. fPUM -PH 'REY 

